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    • 1. 发明授权
    • Fluidized bed powder coating process utilizing tribostatic charging
    • 流化床粉末涂布工艺利用静电充电
    • US06280798B1
    • 2001-08-28
    • US09555884
    • 2000-07-24
    • John RingKevin J. KittleGianfranco Arpe
    • John RingKevin J. KittleGianfranco Arpe
    • B05D124
    • B05C19/025B05D1/24Y10S118/05
    • A process for forming a coating on a conductive substrate, which comprises establishing a fluidized bed of a powder coating composition, in which the mechanism for particle charging is tribostatic charging immersing the substrate wholly or partly within the said fluidized bed, applying a voltage to the substrate for at least part of the period of immersion, whereby particles of the powder coating composition adhere to the substrate, withdrawing the substrate from the fluidized bed and forming the adherent particles into a continuous coating over at least part of the substrate. The process enables the coating of substrate areas which, because of the Faraday cage effect, are inaccessible in conventional electrostatic coating processes, and also enables the formation of thinner coatings than are obtainable by conventional fluidized-bed processes.
    • 一种用于在导电基材上形成涂层的方法,其包括建立粉末涂料组合物的流化床,其中用于颗粒装料的机理是摩擦力充电,将基材全部或部分浸入所述流化床内,向所述流化床施加电压 底物,至少部分浸渍期间,由此粉末涂料组合物的颗粒粘附到基材上,从基板上取出基材,并将粘合颗粒形成至少部分基材上的连续涂层。该方法使得 由于法拉第笼式效应,在常规静电涂布工艺中不可接触的基底区域的涂层,并且还能够形成比通过常规流化床方法可获得的更薄的涂层。